Controlling ecommerce authentication with non-linear analytical models

ABSTRACT

A method of operating a computer system is disclosed. An eCommerce authentication request is received. Content of the eCommerce authentication request is processed through a non-linear analytical model to generate a risk score. The eCommerce authentication request is selectively provided to an authentication node based on the risk score. Related authentication gateway nodes and computer program products are disclosed.

BACKGROUND

The present disclosure relates to financial transaction processing systems.

Financial transactions relating to purchasing goods and services are predominately paid for using credit accounts and debit accounts that an account owner accesses through associated credit cards and debit cards. Financial transaction processing systems provide verification processes that allow merchants to verify that account information is valid and the account owner has sufficient credit or debit funds to cover the purchase.

When a purchaser is located at the merchant's facility, the merchant is responsible for authenticating that the purchaser is the account owner by, for example, comparing the purchaser's signature to a existing signature on the card, examining a picture ID of the purchaser, or providing a password.

For purchases made through a merchant's website and other electronic commerce (“eCommerce”) transactions (known as a card-not-present transactions (CNP)), financial transaction processing systems can use eCommerce authentication processes that challenge the purchaser to provide a security code that is used to authenticate that the purchaser is the account owner or is otherwise authorized by the account owner. The security code may be a password, personal identification number (PIN), or other information known to the account owner such as a one time password received through e-mail, etc. Purchasers can find eCommerce authentication processes undesirable due to the need to remember security codes and the requirement to successfully complete additional process steps for purchases. Merchants can find eCommerce authentication processes undesirable because of the fees charged for use of such processes and lost sales due to purchasers abandoning transactions during the eCommerce authentication processes.

SUMMARY

Some embodiments disclosed herein are directed to a method of operating a computer system. An eCommerce authentication request is received. Content of the eCommerce authentication request is processed through a non-linear analytical model to generate a risk score. The eCommerce authentication request is selectively provided to an authentication node based on the risk score.

Some other embodiments disclosed herein are directed to an authentication gateway node that includes a processor and a memory. The memory is coupled to the processor and includes computer readable program code that when executed by the processor causes the processor to perform operations. The operations include receiving an eCommerce authentication request, processing content of the eCommerce authentication request through a non-linear analytical model to generate a risk score, and selectively providing the eCommerce authentication request to an authentication node based on the risk score.

Some other embodiments disclosed herein are directed to a computer program product that includes a computer readable storage medium having computer readable program code embodied in the medium that when executed by a processor of a computer system causes the computer system to perform operations. The operations include receiving an eCommerce authentication request, processing content of the eCommerce authentication request through a non-linear analytical model to generate a risk score, and selectively providing the eCommerce authentication request to an authentication node based on the risk score.

Other methods, authentication gateway nodes, and computer program products according to embodiments will be or become apparent to one with skill in the art upon review of the following drawings and detailed description. It is intended that all such additional methods, authentication gateway nodes, and computer program products be included within this description and protected by the accompanying claims.

BRIEF DESCRIPTION OF THE DRAWINGS

Aspects of the present disclosure are illustrated by way of example and are not limited by the accompanying drawings. In the drawings:

FIG. 1 is a block diagram of a financial transaction processing system that includes an authentication gateway node that controls which eCommerce authentication requests are authenticated by an authentication node, in accordance with some embodiments;

FIG. 2 is block diagram illustrating further details of an authentication portion of the financial transaction processing system of FIG. 1 configured in accordance with some embodiments;

FIG. 3 is a block diagram of a neural network model that can be used in an authentication gateway node to generate a risk score for an eCommerce authentication request based on weight values that are adapted using feedback, in accordance with some embodiments;

FIGS. 4-10 are flowcharts that illustrate operations that may be performed by an authentication gateway node to control which eCommerce authentication requests are authenticated by an authentication node, in accordance with some embodiments; and

FIG. 11 is a block diagram of a computer system that may be incorporated into various components of the system of FIGS. 1-3, in accordance with some embodiments.

DETAILED DESCRIPTION

Various embodiments will be described more fully hereinafter with reference to the accompanying drawings. Other embodiments may take many different forms and should not be construed as limited to the embodiments set forth herein. Like numbers refer to like elements throughout.

FIG. 1 is a block diagram of a financial transaction processing system that includes an authentication gateway node 100 (e.g., a computer system, computer server or program code executed by another node disclosed herein) that controls which eCommerce authentication requests are authenticated by an authentication node 130 in accordance with some embodiments. Although some embodiments are described in the context of authenticating credit card and/or debit card transactions for purchases made through a merchant's node 120 (e.g., merchant's eCommerce Web server), the embodiments disclosed herein are not limited thereto and can be used with other types of authentication processes.

Referring to FIG. 1, a person who is purchasing an item (purchaser) operates a user terminal 110 to select items to be purchased, and enters (e.g., types, electronically scans, etc.) financial account information (also referred to as “account information”) that can include an account number (e.g., credit card number and/or debit card number) and may further include any one or more of: customer name; account verification information; cardholder's name; an expiration date for the card; a card verification value (CVV); the cardholder's home address; and the purchaser's shipping address. The entered financial account information is communicated by the user terminal 110 to the merchant node 120. The user terminal 110 may be any electronic device that can communicate with a merchant node 120 including, but not limited to, a tablet computer, desktop computer, laptop computer, smart phone, a point-of-sale merchant terminal, etc.

Because of the prevalence of fraud occurring in eCommerce and other card-not-present financial transactions, where merchants cannot directly authenticate purchasers using picture IDs, electronic authentication processes have been introduced to authenticate purchasers. Electronic authentication processes can be performed by an authentication node 130 to attempt to confirm that the purchaser is an account owner or is otherwise authorized by the account owner.

If the merchant node 120 is registered for use of electronic authentication processes, the merchant node 120 generates an eCommerce authentication request that can contain as content items (also referred to as “items of content”) that can include any one or more of:

-   -   1) account number (e.g., credit/debit card number);     -   2) expiration date for the card;     -   3) verification value (e.g., CVV);     -   4) cardholder's name;     -   5) the cardholder's home address;     -   6) the purchaser's shipping address;     -   7) amount of the financial transaction;     -   8) identifier for the purchaser's user terminal;     -   9) characteristics of the purchaser's user terminal (e.g.,         manufacturer, web browser characteristics, and/or operational         characteristics);     -   10) network address of the purchaser's user terminal;     -   11) geographic region of the purchaser's user terminal;     -   12) identifier for the merchant node 120;     -   13) a geographic region of the merchant node 120;     -   14) identifier for the acquirer node 122;     -   15) time of transaction; and     -   16) date of transaction.

The merchant node 120 communicates the eCommerce authentication request toward the authentication node 130 for authentication processing to authenticate the purchaser. The merchant node 120 may communicate the eCommerce authentication request using a software plug-in provided by a provider of the authentication node 130. Authentication of the purchaser can include determining whether the purchaser possesses secret information that should only be known to the account owner or another person who has been authorized by the account owner to make purchases using the account.

As will be explained in further detail below, an authentication gateway node 100 is disclosed herein that controls which eCommerce authentication requests from the merchant node 120 and other merchant nodes 120 cause authentication of purchasers. The authentication gateway node 100 may intercept the eCommerce authentication request from the merchant node 120 and determine whether authentication will be performed by the authentication node 130. The authentication gateway node 100 may, for example, selectively either route the eCommerce authentication request to the authentication node 130 for authentication or respond to the merchant node 120 without authentication by the authentication node 130 (e.g., some eCommerce authentication requests bypass the authentication node 130). Alternatively, the authentication gateway node 100 may mark the eCommerce authentication requests to indicate whether they are to be authenticated by the authentication node 130 (e.g., all eCommerce authentication requests flow through the authentication node 130 but only some cause authentication). These and additional operations by the authentication gateway node 100 are described in further detail below.

Pursuant to one type of authentication process, the authentication node 130 communicates an authentication challenge message to the user terminal 110 which requires the purchaser to enter a security code to complete the purchase. The entered security code is returned to the authentication node 130 in a response message. The security code may be a password, personal identification number (PIN), electronic security token, or other secret information known to the account owner.

The authentication node 130 can compare the security code to an expected code, and apply one or more rules which may be defined by the card issuing bank (referred to more generally as the credit/debit finance issuer node below) to generate an authentication response (e.g., authentication response code) that indicates an outcome of the authentication process.

One type of authentication process is known as a 3-D Secure protocol that can be performed by the authentication node 130 operating as a 3-D Secure authentication server. The 3-D Secure protocol was developed by financial card associations, including Visa and MasterCard, and has become an industry standard. The protocol uses XML messages sent over secure socket layer (SSL) connections between user terminal 110 or other client authentication terminals and the authentication node 130, which can also be referred to as an access control server (ACS). The authentication challenge can be presented through the user terminal 110 to the purchaser within the same web browser window as an in-line session (referred to as an inframe authentication session) or can be presented in a separate window (e.g., pop-up window).

An advantage to merchants of using purchaser authentication is a reduction in “unauthorized transaction” chargebacks. A disadvantage to merchants is that they pay a software setup fee, monthly fee, and per-authentication fee for use of the 3-D Secure access control server provided by the authentication node 130. Moreover, 3-D Secure operation can be complicated and create transaction failures.

Some purchasers view the additional authentication steps as a nuisance or obstacle to completing transactions and/or they erroneously interpret the authentication challenge (e.g., pop-up window) as originating from a fraudulent phishing site/process, which can result in a substantial increase in transaction abandonment by the purchaser and lost revenue to merchants. Some 3-D Secure authentication processes require the purchaser to complete an authentication registration process for the cardholder's financial account, including agreeing to all terms and conditions presented by 3-D Secure, before the purchaser can proceed with a purchase. Purchasers who are unwilling to undertake the risk or inconvenience of registering their card during a purchase, are forced to abandon the transaction. Moreover, some user terminals, such as those having mobile web browsers, can lack features (e.g., support for window frames and/or pop-ups) necessary for proper operation of a 3-D Secure authentication process.

For these and other reasons, some embodiments disclosed herein are directed to the authentication gateway node 100 determining risk scores for eCommerce authentication requests and selectively providing the eCommerce authentication requests to the authentication node 130 based on the risk scores. The authentication gateway node 100 can be configured to operate on eCommerce authentication requests in-flight before being delivered to the authentication node 130, and control based on the risk scores which of the eCommerce authentication requests are processed by the authentication node 130 to authenticate purchasers and generate authentication responses based on the outcomes of the authentication.

In one embodiment, only eCommerce authentication requests having risk scores that satisfy a defined rule are provided to the authentication node 130 for authentication processing and generation of the authentication responses based on the authentication processing, and the other eCommerce authentication requests (having risk scores that do not satisfy the defined rule) bypass authentication processing by the authentication node 130. When bypassing authentication processing by the authentication node 130, the authentication gateway node 100 may generate an authentication response based on the risk score for the eCommerce authentication request (e.g., generate an authentication response indicating that the purchaser was properly authenticated) and communicate the authentication response to the merchant node 120 as if it had originated from the authentication node 130. When the authentication response is generated by the authentication gateway node 100, it may contain the same or similar content to an authentication response generated by the authentication node 130 so that the merchant node 120 is not aware that the authentication response was generated without authentication of the purchaser being performed by the authentication node 130.

Although the authentication gateway node 100 is shown as being separate from the merchant node 120, in some embodiments the authentication gateway node 100 is incorporated into the merchant node 120 so that at least some of the operations disclosed herein as being performed by the authentication gateway node 100 are performed within the merchant node 120. Thus for example, the risk scores can be generated internal to the merchant node 120 and used to control when eCommerce authentication requests are communicated to the authentication node 130. The merchant node 120 can use the risk score to selectively send an eCommerce authentication request to the authentication node 130 for authentication of the purchaser when the risk score satisfies a defined rule or send the financial transaction to the acquirer node 122 and credit/debit finance issuer node 140 for verification against the cardholder's account without authentication of the purchaser by the authentication node 130 when the risk score does not satisfy a defined rule.

Similarly, although the authentication gateway node 100 is shown as being separate from the authentication node 130, in some embodiments the authentication gateway node 100 is incorporated into the authentication node 130 so that at least some of the operations disclosed herein as being performed by the authentication gateway node 100 are performed within the authentication node 130. Thus for example, the risk scores can be generated internal to the authentication node 130 and used to control which of the eCommerce authentication requests cause authentication challenges to be generated to purchasers.

The authentication response (e.g., 3-D Secure authentication response code) can be generated by the authentication node 130, based on authentication processes performed with the purchaser and/or may be generated by the authentication gateway node 100 based on the risk score (e.g., without authentication processing by the authentication node 130) and provided to the merchant node 120. The merchant node 120 receives the authentication response and may deny the transaction based on content of the authentication response (e.g., based on the risk score generated by the authentication gateway node 100 and/or based on the result of authentication processes by the authentication node). The merchant node 120 can initiate verification of the transaction by communicating to a credit/debit finance issuer node 140, via an acquirer node 122 (e.g., merchant's bank), the authentication response and financial transaction information that contains any one or more of the account number (e.g., credit/debit card number), the expiration date for the card, the CVV, the cardholder's name, the cardholder's home address, the purchaser's shipping address, the amount of the financial transaction, and the identifier for the merchant node 120.

The acquirer node 122 routes the authentication response and the financial transaction information to a credit/debit finance issuer node 140 (e.g., card issuing bank server such as a Visa or other card server via VisaNet, BankNet, etc.). The credit/debit finance issuer node 140 generates an authorization decision based on whether the account indicated by the financial transaction information has a sufficient credit limit and/or existing funds to cover an amount indicated by the financial transaction information, and can further generate the authorization decision based on the authentication response from the authentication node 130 and/or the authentication gateway node 100.

The credit/debit finance issuer node 140 communicates its authorization decision to the acquirer node 122, which communicates an authorization decision to the merchant node 120. The merchant node 120 decides whether to complete the transaction with the purchaser or to deny the transaction based on the authorization decision from the acquirer node 122.

Further example operations by the authentication gateway node 100 are explained below with regard to FIGS. 4-10.

Referring to FIG. 1 and the related flowchart of FIG. 4, the authentication gateway node 100 receives (block 400) an eCommerce authentication request from the merchant node 120. The authentication gateway node 100 processes (block 402) content of the eCommerce authentication request through a non-linear analytical model (e.g., a neural network model) to generate a risk score, and selectively provides (block 404) the eCommerce authentication request to the authentication node 130 based on the risk score.

The non-linear analytical model has a non-linear relationship that allows different output values to be generated from a sequence of cycles of processing the same input values. Thus, repetitively processing the same input value(s) through the non-linear analytical model can result in output of different corresponding values.

Controlling which eCommerce authentication requests are provided to the authentication node 130 based on the risk scores can effectively prioritize authenticating only the eCommerce authentication requests that appear to have a greater risk of originating from purchasers who are not the account owner or otherwise authorized by the account owner for the purchase. The other eCommerce authentication requests can bypass authentication by the authentication node 130, allowing verification by a credit/debit finance issuer node 140 (e.g., card issuing bank server such as a Visa or MasterCard member bank server) to proceed. Because some, and perhaps most, eCommerce authentication requests are not authenticated by the authentication node 130, merchants can have substantially lower transaction costs (e.g., reduced per-transaction purchaser authentication fees by a reduced number of authenticated transactions) and fewer transaction abandonments due to fewer purchasers being challenged to complete authentication processes.

The non-linear analytical model of the authentication gateway node 100 generates the risk score based on content of the eCommerce authentication request. Moreover as explained below, the non-linear analytical model of the authentication gateway node 100 may generate the risk score based on a pattern of content items observed in eCommerce authentication requests associated with a same account number, same financial account information, similar financial account information that satisfies a defined rule, and/or a same identified merchant node 120. The pattern can be observable use of the same or similar financial card information in financial transactions that were earlier completed and/or in financial transactions that are presently pending awaiting authorization. Alternatively or additionally, the non-linear analytical model of the authentication gateway node 100 may generate the risk score based on any one or more of:

-   -   1) a pattern of content items observed in simultaneously         occurring or nearly simultaneously occurring (e.g., occurring         within a threshold time) eCommerce authentication requests         associated with a same identified merchant node 120;     -   2) different identified merchant nodes 120 that have a common         characteristic (e.g., merchant characteristics, located in a         common defined geographic region, history of originating         fraudulent transactions, history of eCommerce authentication         requests that fail authentication, and/or common business         characteristics);     -   3) a same identifiable acquirer node 122;     -   4) different identifiable acquirer nodes 122 having a common         characteristic (e.g., bank category, located in a common defined         geographic region, history of being associated with fraudulent         transactions, and/or common business characteristics);     -   5) a same identifiable credit/debit finance issuer node 140; and     -   6) different identifiable credit/debit finance issuer nodes 140         having a common characteristic (e.g., common business         characteristics, located in a common defined geographic region,         history of receiving fraudulent transactions, and/or history of         performing chargebacks against merchant nodes 120).

The non-linear analytical model can be trained based on feedback that can include characteristics of (e.g., observable patterns in) content earlier received in eCommerce authentication requests, and may include results of authentication processes performed on earlier eCommerce authentication requests and associated characteristics of those eCommerce authentication requests. The characteristics may include information identifying content of the eCommerce authentication requests, time of day when the eCommerce authentication request occurred, day of week when the eCommerce authentication request occurred. The non-linear analytical model may be alternatively or additionally be trained to identify when eCommerce authentication requests have one or more of the following characteristics:

-   -   1) generated by the acquirer node 122 at a rate that is outside         an expected range (e.g., greater than a historical observed         upper rate from the acquirer node 122 for a particular time of         day and/or day or week/year);     -   2) associated with a same user terminal 110 and occurring at a         rate that greater than an expected rate arising from a same user         terminal (e.g., indication that eCommerce authentication         requests are being electronically generated by a possibly         malicious program instead of by a human purchaser);     -   3) associated with a same merchant node 120 and occurring at a         rate that is outside an expected range (e.g., greater than a         historical observed upper rate from the merchant node 120 and/or         other merchant nodes having similar characteristics as the         merchant node 120 for a particular time of day and/or day or         week/year); and     -   4) arising from a same geographic region, such as geographic         region of the user terminal 110, the merchant node 120, the         acquirer node 122, and/or the credit/debit finance issuer node         140, and occurring at a rate that is outside an expected range         (e.g., greater than a historical observed upper rate for a         particular time of day and/or day or week/year).

The non-linear analytical model can generate the risk score based on content (information contained) in a single eCommerce authentication request or may generate the risk score based on comparison of content between a plurality of eCommerce authentication requests that may have been earlier received and/or that may be received within a threshold time.

FIG. 2 is a block diagram illustrating further details of an authentication portion of the financial transaction processing system of FIG. 1 configured according to some embodiments. Referring to FIG. 2, the authentication gateway node 100 receives eCommerce authentication requests from a plurality of merchant nodes 120. The authentication gateway node 100 processes content of each of the eCommerce authentication requests through a non-linear analytical model 102 (e.g., a neural network model) to generate risk scores for the eCommerce authentication requests. The operations for generating a risk score can be repeated (e.g., performed sequentially or simultaneously) for a plurality of eCommerce authentication requests receiving within a threshold time (e.g., simultaneously occurring or nearly simultaneously occurring eCommerce authentication requests).

In one embodiment, the authentication gateway node 100 selects eCommerce authentication requests from among the plurality of eCommerce authentication requests to provide to the authentication node 130 based on comparison of the risk scores for the plurality of eCommerce authentication requests. The authentication gateway node 100 may select a subset of the plurality of eCommerce authentication requests associated with risk scores indicating a higher likelihood of their failing authentication if provided to the authentication node 130, or otherwise indicate a level of trustworthiness that the eCommerce authentication request originated from the account owner or another person authorized by the account owner. Other eCommerce authentication requests that are not within the subset can have authentication responses generated and communicated to the respective merchant nodes 120 without authentication processing by the authentication node 130 (e.g., the authentication gateway node 100 and/or the authentication node 130 can generate an authentication response based on a risk score of generated from an eCommerce authentication request).

In one embodiment, when selectively providing the eCommerce authentication request to the authentication node 130, the authentication gateway node 100 may selectively mark the eCommerce authentication request to indicate whether authentication of a person, who is associated with the eCommerce authentication request, by the authentication node 130 is requested based on whether the risk score satisfies a defined rule. The authentication gateway node 130 then performs authentication processing (e.g., providing authentication challenges to purchasers) for only the eCommerce authentication requests that are marked for authentication. The authentication gateway node 130 can then generate the authentication responses based on a result of the authentication processing when performed, or based on the risk score when authentication processing is not performed.

In another embodiment, when selectively providing the eCommerce authentication request to the authentication node 130, the authentication gateway node 100 selectively routes the eCommerce authentication request to the authentication node 130 for authentication of a person, who is associated with the eCommerce authentication request, based on whether the risk score satisfies a defined rule. Accordingly, the authentication node 130 performs purchaser authentication processes for each eCommerce authentication request that it receives, however the authentication node 130 only receives eCommerce authentication requests having risk scores that the authentication gateway node 100 determined to satisfy a defined rule (e.g., having a risk score that exceeds a threshold level or alternatively that does not exceed a threshold level).

In another embodiment, the authentication node 130 can include some of the functionality described herein of the authentication gateway node 100. The authentication node 130 can receive all eCommerce authentication requests, but selectively generate an authentication challenge to the user equipment 110 (FIG. 1) to authenticate a person, who is associated with the transaction, only for eCommerce authentication requests having risk scores that satisfy a defined rule.

The authentication gateway node 100 can include training circuitry 104 (e.g., computer readable program code executed by a processor) that trains the neural network model 102 based on feedback from the merchant nodes 120, the authentication node 130, and/or other components of the financial processing system (e.g., the acquirer node 122 and/or the credit/debit finance issuer node 140). The training circuitry 104 may train the neural network model 102 based on feedback of results of authentication processes that have been performed and the associated characteristics of the eCommerce authentication requests associated with the authentication processes, which may include one or more of the characteristics explained above for FIG. 1 regarding training of the non-linear analytical model of the authentication gateway node 100.

For example, the neural network model 102 may be trained based on a comparison of content of a plurality of eCommerce authentication requests that were provided to the authentication node 130 and feedback of results of authentication processes performed by the authentication node 130 on the plurality of eCommerce authentication requests. Accordingly, the neural network model can learn over time to identify particular content or patterns of content occurring in a sequence of eCommerce authentication requests and/or occurring across a plurality of eCommerce authentication requests within a threshold time (e.g., simultaneously occurring or nearly simultaneously occurring) that are indicative of a greater or lesser likelihood that the purchasers associated with the eCommerce authentication requests will fail authentication if authentication processes are performed by the authentication node 130 on the eCommerce authentication requests.

By way of further example, the training circuitry 104 may train the neural network model 102 using content of eCommerce authentication requests that have been determined to have failed authentication processes by the authentication node 130, that resulted in a contested charge by account owners, nonpayment due to insufficient funds, fraudulent transaction against accounts which may be determined based on information provided by merchant nodes 120, the acquirer node 122, and/or the credit/debit finance issuer node 140.

The content of eCommerce authentication requests used to train the neural network model 102 may include one or more of account number (e.g., credit/debit card number), the expiration date for the card, the CVV, cardholder's name, cardholder's home address, purchaser's shipping address, the amount of the financial transaction, an identifier for the purchaser's user terminal 110, characteristics of the purchaser's user terminal 110 (e.g., manufacturer, web browser characteristics, and/or operational characteristics), the identifier for the merchant node 120, the identifier for the acquirer node 122, the identifier for the credit/debit finance issuer node 140, a geographic region of: the account owner; purchaser's user terminal 110; merchant node 120; acquirer node 122; and/or the credit/debit finance issuer node 140. The training circuitry 104 may train the neural network model 102 based on one or more of the characteristics explained above for FIG. 1 regarding training of the non-linear analytical model of the authentication gateway node 100.

The neural network model 102 may, for example, receive hundreds or thousands of simultaneously occurring or nearly simultaneously occurring eCommerce authentication requests from tens, hundreds, or thousands of different merchant nodes 120, and generate risk scores that are used to determine which of the eCommerce authentication requests will be processed by the authentication node 130 to authenticate associated purchasers (or other persons) associated with the eCommerce authentication requests.

Alternatively or additionally, the neural network model 102 may, for example, receive hundreds or thousands of sequentially occurring eCommerce authentication requests from a same one of the merchant nodes 120, and generate risk scores for each of the eCommerce authentication requests based on content of previous occurring ones of the eCommerce authentication requests in sequence. The resource score is used to determine which of the eCommerce authentication requests will be processed by the authentication node 130 to authenticate associated purchasers associated with the eCommerce authentication requests.

The neural network model 102 or other circuitry of the authentication gateway node 100 (e.g., comparison process performed by a processor circuit) may compare the risk scores generated for a plurality of eCommerce authentication requests to, for example, select a defined number or percentage of the eCommerce authentication requests having risk scores that indicate a greater relative likelihood that the purchasers associated with the eCommerce authentication requests will fail authentication relative to the non-selected eCommerce authentication requests. Accordingly, instead of allowing all eCommerce authentication requests to be processed by the authentication node 130 for authentication, the authentication gateway node 100 can use the neural network model 102 to select a subset of the eCommerce authentication requests that are to be processed by the authentication node 130 for authentication.

FIG. 3 is a block diagram of a neural network model 102 that can be used in an authentication gateway node 100 to generate a risk score for an eCommerce authentication request. Referring to FIG. 3, the neural network model 102 includes an input layer having a plurality of input nodes, a sequence of neural network layers each including a plurality of weight nodes, and an output layer including an output node. In the particular non-limiting example of FIG. 3, the input layer includes input nodes I₁ to I_(N) (where N is any plural integer). A first one of the sequence of neural network layers includes weight nodes N_(1L1) (where “1L1” refers to a first weight node on layer one) to N_(XL1) (where X is any plural integer). A last one (“Z”) of the sequence of neural network layers includes weight nodes N_(1LZ) (where Z is any plural integer) to N_(YLZ) (where Y is any plural integer). The output layer includes an output node O.

The neural network model 102 of FIG. 3 is an example that has been provided for ease of illustration and explanation of one embodiment. Other embodiments may include any non-zero number of input layers having any non-zero number of input nodes, any non-zero number of neural network layers having a plural number of weight nodes, and any non-zero number of output layers having any non-zero number of output nodes. The number of input nodes can be selected based on the number of eCommerce authentication requests that are to be simultaneously processed, and the number of output nodes can be similarly selected based on the number of risk scores that are to be simultaneously generated therefrom.

The neural network model 102 can be trained based on feedback from results of earlier authentication processes performed on eCommerce authentication requests having defined content or other characteristics and/or based on eCommerce authentication requests that were input to the neural network model 102. Training of the neural network model 102 can include adapting (defining/adjusting) weight values used by the weight nodes to combine values from input nodes and/or from other weight nodes to generate combined values that can be provided to other weight nodes or to the output node.

Referring to FIG. 3 and the flowchart of FIG. 5 of an embodiment, the neural network model 102 can be operated to process (block 500) a plurality of content items of an eCommerce authentication request through different inputs (e.g., input nodes I₁ to I_(N)) to generate a risk score. The contents items associated with an eCommerce authentication request that can be simultaneously processed through different input nodes I₁ to I_(N) may include any one or more of:

-   -   1) account number (e.g., credit/debit card number);     -   2) the expiration date for the card;     -   3) verification value (e.g., CVV);     -   4) cardholder's name;     -   5) the cardholder's home address;     -   6) the purchaser's shipping address;     -   7) amount of the financial transaction;     -   8) identifier for the purchaser's user terminal;     -   9) characteristics of the purchaser's user terminal (e.g.,         manufacturer, web browser characteristics, and/or operational         characteristics);     -   10) network address of the purchaser's user terminal;     -   11) geographic region of the purchaser's user terminal;     -   12) identifier for the merchant node 120;     -   13) a geographic region of the merchant node 120;     -   14) identifier for the acquirer node 122;     -   15) time of transaction;     -   16) date of transaction;     -   17) a geographic region of the acquirer node 122; and     -   18) a geographic region of the credit/debit finance issuer node         140.

By way of example, the account number can be provided to input node I₁, the expiration date for the card can be provided to input node I₂, the CVV can be provided to input node I₃, the amount of the financial transaction can be provided to input node I₄, the identifier for the merchant node 120 can be provided to input node I₅, the purchaser's name can be provided to input node I₆, an identifier of the purchaser's user terminal 110 can be provided to input node I₇, the cardholder's home address can be provided to input node I₈, the purchaser's shipping address can be provided to input node I₉, a geographic region of the merchant node 120 can be provided to input node I₁₀, a geographic region of the acquirer node 122 can be provided to input node I₁₁, a geographic region of the credit/debit finance issuer node 140 can be provided to input node I₁₂, and characteristics of the purchaser's user terminal can be provided to input node I₁₃.

Items of content of other eCommerce authentication requests occurring simultaneously or within a threshold time can be similarly provided to further groups of input nodes (e.g., group I₁₄-I₂₆, group I₂₇-I₃₉, etc.). In this particular example, the content items associated with 100 different eCommerce authentication requests can be simultaneously or nearly simultaneously provided to an array of 1300 input nodes I (e.g., 100 eCommerce authentication requests, each having 13 content items). The weight nodes N of a plurality of neural network layers can process values output by the input nodes I to generate combined values that are provided to an array of output nodes O. The number of output nodes may be the same as the number of eCommerce authentication requests that are simultaneously processed by the neural network model 102, with each of the output nodes outputting a risk score for a different one of the eCommerce authentication requests. Thus, when the neural network model 102 is configured to simultaneously process 100 different eCommerce authentication request, 100 output nodes O can be provided to each output a risk score for a different one of the 100 eCommerce authentication requests.

The interconnected structure between the input nodes, the weight nodes of the neural network layers, and the output nodes causes the characteristics of each eCommerce authentication request to influence the risk score generated for all of the other eCommerce authentication requests that are simultaneously processed. The risk scores generated by the neural network model 102 may thereby identify a comparative prioritization of which of the eCommerce authentication requests have characteristics that provide a higher/lower likelihood of their failing/passing authentication if provided to the authentication node 130, or otherwise indicate a level of trustworthiness that the eCommerce authentication request originated from the account owner or another person authorized by the account owner. The authentication gateway node 100 can thereby select a group of the eCommerce authentication requests having an upper or lower range of the generated risk scores, and provide the selected group of eCommerce authentication request to the authentication node 130 for authentication processing. In sharp contrast, the other eCommerce authentication requests outside the selected group are not provided to the authentication node 130 for authentication processing, but instead have authentication responses generated based on their credit scores.

The neural network model 102 can be trained (block 502) based on comparison of content of a plurality of eCommerce authentication requests provided to the authentication node 130 and feedback of results of authentication processes performed by the authentication node 130 on the plurality of eCommerce authentication requests and/or based on feedback information provided by the merchant node 120, the acquirer node 122, and/or the credit/debit finance issuer node 140 as disclosed herein.

Referring to FIG. 3 and the flowchart of FIG. 6 of an embodiment, the neural network model 102 operates to process (block 600) a plurality of content items of a plurality of eCommerce authentication requests, received within a threshold time, through different inputs of the neural network model 102 to generate the risk score. The neural network model 102 mathematically combines (block 602) values of content items from defined ones of the inputs of the neural network using weight values to generate a risk score for each of the plurality of eCommerce authentication requests (e.g., sum values of the content items to generate a summed value that is multiplied by a weight value to generate the risk score). The neural network model 102 selects (block 604) eCommerce authentication requests from among the plurality of eCommerce authentication requests to provide to the authentication node 130 based on comparison of the risk scores for the plurality of eCommerce authentication requests.

The neural network model 102 can operate to adapt (block 606) the weight values (e.g., via the training circuit 104 of FIG. 2) based on feedback of results of authentication processes performed by the authentication node 130 on eCommerce authentication requests and/or based on based on feedback information received from the merchant node 120, the acquirer node 122, and/or the credit/debit finance issuer node 140 that defines characteristics of future authentication requests that need authentication. The weight values may be adapted based on feedback information received from a plurality of finance issuer nodes 140 that defines characteristics of future authentication requests that need authentication. The weight values may be adapted based on feedback of characteristics of eCommerce authentication requests that may include one or more of the characteristics explained above for FIG. 1 regarding training of the non-linear analytical model of the authentication gateway node 100.

Referring to FIG. 3 and the flowchart of FIG. 7, in a further embodiment the neural network model 102 operates (block 700) the input nodes of the input layer to each receive a different one of the content items of an eCommerce authentication request and output a value. The neural network model 102 operates (block 702) the weight nodes of the first one of the sequence of neural network layers using weight values to mathematically combine values that are output by the input nodes to generate combined values. Each of the weight nodes of the first layer may, for example, sum the values that are output by the input nodes, and multiply the summed result by a weight value that can be separately defined for each of the weight nodes (and may thereby be different between the weight nodes on a same layer) to generate one of the combined values.

The neural network model 102 operates (block 704) the weight nodes of the last one of the sequence of neural network layers using weight values to mathematically combine the combined values from a plurality of weight nodes of a previous one of the sequence of neural network layers to generate combined values. Each of the weight nodes of the last layer may, for example, sum the combined values from a plurality of weight nodes of a previous one of the sequence of neural network layers, and multiply the summed result by a weight value that can be separately defined for each of the weight nodes (and may thereby be different between the weight nodes on a same layer) to generate one of the combined values.

The neural network model 102 operates (block 706) the output node “O” of the output layer to combine the combined values from the weight nodes of the last one of the sequence of neural network layers to generate the risk score.

FIGS. 8-10 illustrate flowcharts of further operations that can be performed (e.g., by a training circuit) to train a neural network model based on feedback from a merchant node 120, an acquirer node 122, a credit/debit finance issuer node 140, and/or any other element/node of a financial transaction processing system, according to various further embodiments.

Referring to FIG. 8, the weight values of the weight nodes of at least one of the neural network layers are adapted (block 800), such as by the training circuit 104 of FIG. 2, based on feedback of results of authentication processes performed by the authentication node 130 on eCommerce authentication requests.

Referring to FIG. 9, the weight values of the weight nodes of at least one of the neural network layers are adapted (block 900) based on feedback information received from a merchant node that defines characteristics of future authentication requests needing authentication.

Referring to FIG. 10, the weight values of the weight nodes of different ones of the neural network layers are adapted (block 1000) based on feedback information received from corresponding different merchant nodes that defines characteristics of future authentication requests needing authentication.

FIG. 11 is a block diagram of a computer system 1100 that may be used as an authentication gateway node 100, an authentication node 130, a merchant node 120, an acquirer node 122, a user terminal 110, and/or a credit/debit finance issuer node 140 to perform the operations of one of more of the embodiments disclosed herein for one or more of those elements. The computer system 1100 can include one or more network interface circuits 1130, one or more processor circuits 1110 (referred to as “processor” for brevity), and one or more memory circuits 1120 (referred to as “memory” for brevity) containing program code 1122.

Although various embodiments have been disclosed herein for training the neural network model or, more generally, the non-linear analytical model 100 while it is processing eCommerce authentication requests from merchant nodes 120 which are operationally waiting for corresponding authentication responses, in some other embodiments the training is performed offline. For example, the training may be performed during production of the non-linear analytical model before its incorporation into an operational authentication gateway node 100 and/or the training may be performed while an authentication gateway node 100 is not actively processing eCommerce authentication requests from merchant nodes 120 awaiting authentication responses, such as while maintenance or other offline processes are performed on the authentication gateway node 100.

The processor 1110 may include one or more data processing circuits, such as a general purpose and/or special purpose processor (e.g., microprocessor and/or digital signal processor) that may be collocated or distributed across one or more networks. The processor 1110 is configured to execute program code 1122 in the memory 1120, described below as a computer readable storage medium, to perform some or all of the operations for one or more of the embodiments disclosed herein.

A neural network of the authentication gateway node 100 may be implemented by the program code 1122 executed by the processor 1110 and/or may be implemented by other circuits that can include, but are not limited to, a digital gate array and/or analog circuits.

Further Definitions and Embodiments

In the above-description of various embodiments of the present disclosure, aspects of the present disclosure may be illustrated and described herein in any of a number of patentable classes or contexts including any new and useful process, machine, manufacture, or composition of matter, or any new and useful improvement thereof. Accordingly, aspects of the present disclosure may be implemented in entirely hardware, entirely software (including firmware, resident software, micro-code, etc.) or combining software and hardware implementation that may all generally be referred to herein as a “circuit,” “module,” “component,” or “system.” Furthermore, aspects of the present disclosure may take the form of a computer program product comprising one or more computer readable media having computer readable program code embodied thereon.

Any combination of one or more computer readable media may be used. The computer readable media may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), an appropriate optical fiber with a repeater, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.

A computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer readable signal medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

Computer program code for carrying out operations for aspects of the present disclosure may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Scala, Smalltalk, Eiffel, JADE, Emerald, C++, C#, VB.NET, Python or the like, conventional procedural programming languages, such as the “C” programming language, Visual Basic, Fortran 2003, Perl, COBOL 2002, PHP, ABAP, dynamic programming languages such as Python, Ruby and Groovy, or other programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the latter scenario, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet Service Provider) or in a cloud computing environment or offered as a service such as a Software as a Service (SaaS).

Aspects of the present disclosure are described herein with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the disclosure. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable instruction execution apparatus, create a mechanism for implementing the functions/acts specified in the flowchart and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer readable medium that when executed can direct a computer, other programmable data processing apparatus, or other devices to function in a particular manner, such that the instructions when stored in the computer readable medium produce an article of manufacture including instructions which when executed, cause a computer to implement the function/act specified in the flowchart and/or block diagram block or blocks. The computer program instructions may also be loaded onto a computer, other programmable instruction execution apparatus, or other devices to cause a series of operational steps to be performed on the computer, other programmable apparatuses or other devices to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide processes for implementing the functions/acts specified in the flowchart and/or block diagram block or blocks.

It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of this specification and the relevant art and will not be interpreted in an idealized or overly formal sense expressly so defined herein.

The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various aspects of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

The terminology used herein is for the purpose of describing particular aspects only and is not intended to be limiting of the disclosure. As used herein, the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises” and/or “comprising,” when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items. Like reference numbers signify like elements throughout the description of the figures.

The corresponding structures, materials, acts, and equivalents of any means or step plus function elements in the claims below are intended to include any disclosed structure, material, or act for performing the function in combination with other claimed elements as specifically claimed. The description of the present disclosure has been presented for purposes of illustration and description, but is not intended to be exhaustive or limited to the disclosure in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the disclosure. The aspects of the disclosure herein were chosen and described in order to best explain the principles of the disclosure and the practical application, and to enable others of ordinary skill in the art to understand the disclosure with various modifications as are suited to the particular use contemplated. 

1. A method of operating a computer system comprising: receiving an eCommerce authentication request; processing content of the eCommerce authentication request through a non-linear analytical model to generate a risk score; and selectively providing the eCommerce authentication request to an authentication node based on the risk score.
 2. The method of claim 1, further comprising: repeating the generating a risk score for a plurality of eCommerce authentication requests receiving within a threshold time; and selecting eCommerce authentication requests from among the plurality of eCommerce authentication requests to provide to the authentication node based on comparison of the risk scores for the plurality of eCommerce authentication requests.
 3. The method of claim 2, wherein selecting eCommerce authentication requests from among the plurality of eCommerce authentication requests to provide to the authentication node based on comparison of the risk scores for the plurality of eCommerce authentication requests, comprises: selecting a subset of the plurality of eCommerce authentication requests associated with risk scores indicating a higher likelihood of their failing authentication if provided to the authentication node.
 4. The method of claim 1, wherein selectively providing the eCommerce authentication request to the authentication node based on the risk score, comprises: selectively marking the eCommerce authentication request to indicate whether authentication of a person, who is associated with the eCommerce authentication request, by the authentication node is requested based on whether the risk score satisfies a defined rule.
 5. The method of claim 1, wherein selectively providing the eCommerce authentication request to the authentication node based on the risk score, comprises: selectively routing the eCommerce authentication request to the authentication node for authentication of a person, who is associated with the eCommerce authentication request, based on whether the risk score satisfies a defined rule.
 6. The method of claim 1, further comprising: selectively generating an authentication challenge to user equipment of a person, who is associated with the eCommerce authentication request, based on whether the risk score satisfies a defined rule.
 7. The method of claim 1, wherein generating a risk score based on processing content of the eCommerce authentication request through the non-linear analytical model, comprises: processing a plurality of content items of the eCommerce authentication request through different inputs of a neural network model to generate the risk score.
 8. The method of claim 7, further comprising: training the neural network model based on comparison of content of a plurality of eCommerce authentication requests provided to the authentication node and feedback of results of authentication processes performed by the authentication node on the plurality of eCommerce authentication requests.
 9. The method of claim 7, further comprising: processing a plurality of content items of a plurality of eCommerce authentication requests, received within a threshold time, through different inputs of the neural network model to generate the risk score.
 10. The method of claim 9, wherein processing a plurality of content items of a plurality of eCommerce authentication requests, received within a threshold time, through different inputs of the neural network model to generate the risk score, comprises: mathematically combining values of content items from defined ones of the inputs of the neural network model using weight values to generate a risk score for each of the plurality of eCommerce authentication requests; and selecting eCommerce authentication requests from among the plurality of eCommerce authentication requests to provide to the authentication node based on comparison of the risk scores for the plurality of eCommerce authentication requests.
 11. The method of claim 10, further comprising: adapting the weight values based on feedback of results of authentication processes performed by the authentication node on eCommerce authentication requests.
 12. The method of claim 10, further comprising: adapting the weight values based on feedback information received from a finance issuer node that defines characteristics of future eCommerce authentication requests that need authentication.
 13. The method of claim 12, further comprising: adapting the weight values based on feedback information received from a plurality of finance issuer nodes that defines characteristics of future eCommerce authentication requests that need authentication.
 14. The method of claim 7, wherein the neural network model comprises an input layer comprising input nodes, a sequence of neural network layers each comprising a plurality of weight nodes, and an output layer comprising an output node; the method further comprising: operating the input nodes of the input layer to each receive a different one of the content items of the eCommerce authentication request and output a value; operating the weight nodes of a first one of the sequence of neural network layers using weight values to mathematically combine values that are output by the input nodes to generate combined values; operating the weight nodes of a last one of the sequence of neural network layers using weight values to mathematically combine the combined values from a plurality of weight nodes of a previous one of the sequence of neural network layers to generate combined values; operating the output node of the output layer to combine the combined values from the weight nodes of the last one of the sequence of neural network layers to generate the risk score.
 15. The method of claim 14, further comprising: adapting the weight values of the weight nodes of at least one of the neural network layers based on feedback of results of authentication processes performed by the authentication node on eCommerce authentication requests.
 16. The method of claim 14, further comprising: adapting the weight values of the weight nodes of at least one of the neural network layers based on feedback information received from a merchant node that defines characteristics of future eCommerce authentication requests needing authentication.
 17. The method of claim 16, further comprising: adapting the weight values of the weight nodes of different ones of the neural network layers based on feedback information received from corresponding different merchant nodes that defines characteristics of future eCommerce authentication requests needing authentication.
 18. An authentication gateway node comprising: a processor; and a memory coupled to the processor and comprising computer readable program code that when executed by the processor causes the processor to perform operations comprising: receiving an eCommerce authentication request; processing content of the eCommerce authentication request through a non-linear analytical model to generate a risk score; and selectively providing the eCommerce authentication request to an authentication node based on the risk score.
 19. The authentication gateway node of claim 18, wherein the operations further comprise: providing a plurality of content items of a plurality of eCommerce authentication requests, received within a threshold time, to different inputs of a neural network model; mathematically combining the inputs of the neural network model using weight values to generate a risk score for each of the plurality of eCommerce authentication requests; selecting eCommerce authentication requests from among the plurality of eCommerce authentication requests to provide to the authentication node based on comparison of the risk scores for the plurality of eCommerce authentication requests; and adapting the weight values based on feedback of results of authentication processes performed by the authentication node on eCommerce authentication requests.
 20. A computer program product comprising: a computer readable storage medium having computer readable program code embodied in the medium that when executed by a processor of a computer system causes the computer system to perform operations comprising: receiving an eCommerce authentication request; processing content of the eCommerce authentication request through a non-linear analytical model to generate a risk score; and selectively providing the eCommerce authentication request to an authentication node based on the risk score. 